I came to this thread late, but yeah. If you really want to build a wheel with the new hub build a whole wheel and have a spare wheel.

Wheel building isn't terribly hard to learn and is a good skill to have. Sheldon's tutorial is a good one.

On the other hand the Deore is pretty unlikely to fail if given any maintenance at all. Mine have typically outlasted a couple rim replacements is using rim brakes. Also even if you let the races get pitted the wheels don't stop turning, so you can probably repack them and finish your tour or at least ride until somewhere that it is convenient to replace it.